Reach, Grasp/Release, Voluntary release

Question 1

Hands predominantly closed

Answer 1

0 to 3 months

Question 2

Indwelling thumbs disappear voluntary grasp emerges

Answer 2

2 to 3 months

Question 3

Ulnar palmer grasp (thumb not active)

Answer 3

3 1/2 to 4 1/2 months

Question 4

Palmer grasp

Answer 4

4 to 5 months

Question 5

Radial palmer grasp

Answer 5

6 to 7 months

Question 6

Lateral pincer grasp (thumb and radial fingers)

Answer 6

7 to 9 months

Question 7

Inferior pincer grasp (index finger surface and thumb

Answer 7

7 1/2 to 9 months

Question 8

Poke with index finger

Answer 8

9 to 10 months

Question 9

Superior pincer grasp

Answer 9

9 months to 1 years old

Question 10

Gross grasp on crayon

Answer 10

11 months to 1 years old

Question 11

Neat pincer grasp and thumb opposition present

Answer 11

1 year to 1 year and 3 months

Question 12

Digital pronated grasp of writing instrument

Answer 12

1 year 8 months to 2 years

Question 13

Static tripod grasp of writing instrument

Answer 13

2 years to 3 years 6 months

Question 14

cylindrical grasp (picking up a glass)

Answer 14

1 year 6 months to 3 years old

Question 15

Dynamic tripod grasp of writing instrument

Answer 15

2 years 8 months to 3 years old

Question 16

Spherical grasp (opening a jar lid)

Answer 16

3 years old

Question 17

Opposes thumb to fingers

Answer 17

4 years 6 months

Question 18

overall grasp patterns established

Answer 18

5 years old

Question 19

unable to voluntarily release

Answer 19

0 to 1 month

Question 20

transfers hand to hand using mouth to stabilize

Answer 20

1 to 5 months

Question 21

begin transfer hand to hand without using mouth

Answer 21

5 to 6 months

Question 22

release voluntary with one hand (drops object off tray)

Answer 22

9 months

Question 23

shoulder, elbow, wrist stable release into containers

Answer 23

1 years old

Question 24

release small objects into containers ( stack 2 cubes)

Answer 24

1 year 6 months